using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class ChatMaster : MonoBehaviour {

    class ChatEntry{
        public string name = "";
        public string message = "";
        public string timeTag = "";
    }

    ArrayList entries;
    Vector2 currentScrollPos = new Vector2();
    string inputField = "";
    bool chatInFocus = false;
    string inputFieldFocus = "CIFT";
    bool absPos = false;

    void Awake () {
        InitializeChat();
    }

    void InitializeChat(){
        entries = new ArrayList();
        unfocusChat();
    }

    //draw the chat box in size relative to your GUIlayout
    public void Draw(){
        ChatWindow();
    }

    void ChatWindow(){
        GUILayout.BeginVertical();
        currentScrollPos = GUILayout.BeginScrollView(currentScrollPos, GUILayout.MaxWidth(1000), GUILayout.MinWidth(1000)); //limits the chat window size to max 1000x1000, remove the restraints if you want

        foreach(ChatEntry ent in entries){
            GUILayout.BeginHorizontal();
            GUI.skin.label.wordWrap = true;
            GUILayout.Label(ent.timeTag + " "+ ent.name + ": "+ent.message);
            GUILayout.EndHorizontal();
            GUILayout.Space(3);
        }

        GUILayout.EndScrollView();
        if(chatInFocus){
            GUI.SetNextControlName(inputFieldFocus);
            inputField = GUILayout.TextField(inputField, GUILayout.MaxWidth(1000), GUILayout.MinWidth(1000));
            GUI.FocusControl(inputFieldFocus);
        }
        GUILayout.EndVertical();

        if(chatInFocus){
            HandleNewEntries();
        } else {
            checkForInput();
        }

    }

    void unfocusChat(){
        //Debug.Log("unfocusing chat");
        inputField = "";
        chatInFocus = false;
    }

    void checkForInput(){
        if(Event.current.type == EventType.KeyDown  Event.current.character == '\n'  !chatInFocus){
            GUI.FocusControl(inputFieldFocus);
            chatInFocus = true;
            currentScrollPos.y = float.PositiveInfinity;
        }
    }

    void HandleNewEntries(){
        if(Event.current.type == EventType.KeyDown  Event.current.character == '\n'){
            if(inputField.Length <= 0){
                unfocusChat();
                Debug.Log("unfocusing chat (empty entry)");
                return;
            }
            networkView.RPC ("AddChatEntry", RPCMode.All, "Cookie monster", inputField);
            //AddChatEntry("Cookie monster", inputField); //for offline testing
            unfocusChat();
            //Debug.Log("unfocusing chat and entry sent");
        }
    }

    [RPC]
    void AddChatEntry(string name, string msg){
        ChatEntry newEntry = new ChatEntry();
        newEntry.name = name;
        newEntry.message = msg;
        newEntry.timeTag = "["+System.DateTime.Now.Hour.ToString()+":"+System.DateTime.Now.Minute.ToString()+"]";
        entries.Add(newEntry);
        currentScrollPos.y = float.PositiveInfinity;
    }
}